3N06

A mutant human Prolactin receptor antagonist H27A in complex with the extracellular domain of the human prolactin receptor


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.241 
  • R-Value Work: 0.195 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Two Independent Histidines, One in Human Prolactin and One in Its Receptor, Are Critical for pH-dependent Receptor Recognition and Activation.

Kulkarni, M.V.Tettamanzi, M.C.Murphy, J.W.Keeler, C.Myszka, D.G.Chayen, N.E.Lolis, E.J.Hodsdon, M.E.

(2010) J.Biol.Chem. 285: 38524-38533

  • DOI: 10.1074/jbc.M110.172072
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Human prolactin (hPRL), a member of the family of hematopoietic cytokines, functions as both an endocrine hormone and autocrine/paracrine growth factor. We have previously demonstrated that recognition of the hPRL·receptor depends strongly on solutio ...

    Human prolactin (hPRL), a member of the family of hematopoietic cytokines, functions as both an endocrine hormone and autocrine/paracrine growth factor. We have previously demonstrated that recognition of the hPRL·receptor depends strongly on solution acidity over the physiologic range from pH 6 to pH 8. The hPRL·receptor binding interface contains four histidines whose protonation is hypothesized to regulate pH-dependent receptor recognition. Here, we systematically dissect its molecular origin by characterizing the consequences of His to Ala mutations on pH-dependent receptor binding kinetics, site-specific histidine protonation, and high resolution structures of the intermolecular interface. Thermodynamic modeling of the pH dependence to receptor binding affinity reveals large changes in site-specific protonation constants for a majority of interface histidines upon complexation. Removal of individual His imidazoles reduces these perturbations in protonation constants, which is most likely explained by the introduction of solvent-filled, buried cavities in the crystallographic structures without inducing significant conformational rearrangements.


    Organizational Affiliation

    Department of Laboratory Medicine, Yale School of Medicine, New Haven, Connecticut 06520, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Prolactin
A
186Homo sapiensMutation(s): 2 
Gene Names: PRL
Find proteins for P01236 (Homo sapiens)
Go to Gene View: PRL
Go to UniProtKB:  P01236
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Prolactin receptor
B
210Homo sapiensMutation(s): 0 
Gene Names: PRLR
Find proteins for P16471 (Homo sapiens)
Go to Gene View: PRLR
Go to UniProtKB:  P16471
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NA
Query on NA

Download SDF File 
Download CCD File 
B
SODIUM ION
Na
FKNQFGJONOIPTF-UHFFFAOYSA-N
 Ligand Interaction
CL
Query on CL

Download SDF File 
Download CCD File 
B
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.241 
  • R-Value Work: 0.195 
  • Space Group: P 65
Unit Cell:
Length (Å)Angle (°)
a = 123.419α = 90.00
b = 123.419β = 90.00
c = 72.665γ = 120.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
DENZOdata reduction
REFMACrefinement
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2010-09-29
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance
  • Version 1.2: 2017-11-08
    Type: Refinement description